Detoni, Archimedes Alves, Lucas Bassetti Rodrigues Fonseca, João Paulo Andrade Almeida, and Ricardo Almeida Falbo. 2018. “A Reference Ontology for Budgetary Authorization and Execution of Public Expenditure”. ISys - Brazilian Journal of Information Systems 11 (3):4-53. https://doi.org/10.5753/isys.2018.369.